Step Three Write a main program that will use your PiggyBank class. It will ask the user for the name of a file. The file will begin with an integer indicating the number of PiggyBanks described in the file. Each PiggyBank will be represented by 4 numbers which indicate the number of quarters, dimes, nickels, and pennies, respectively. For example, this file describes 4 PiggyBanks (the first has 4 quarters, 1 dime, 0 nickels, 25 pennies, etc.)

Duplicating objects creates copies that a. move differently than the original object b. erase the original object c. look and act like the original object d. add events to a game

Which best explains why a digital leader would join a society specializing in technology

The volume v and paper surface area a of a conical paper cup are given by where r is the radius of the base of the cone and h is the height of the cone. a. by eliminating h, obtain the expression for a as a function of r and v. b. create a user-de ned function that accepts r as the only argument and computes a for a given value of v. declare v to be global within the function. c. for v ! 10 in.3 , use the function with the fminbnd function to compute the value of r that minimizes the area a. what is the corresponding value of the height h? investigate the sensitivity of the solution by plotting v versus r. how much can r vary about its optimal value before the area increases 10 percent above its minimum value?